The photon energy is the light frequency times Planck's constant. ... Planck's constant is usually called "h". Its value is about 6.626*10^-34 Joules/ Hz. A Joule is a unit of energy, and a Hertz is a unit of frequency, so when you multiply a frequency by h you get an energy.
David doesn't need to do anything at all. His explanation has already
been verified. He saw lights in the sky. He doesn't know what they are.
Therefore, by definition, they are UFOs ... Unidentified Flying Objects.
Period. End of discussion.
Huge numbers of unidentified things have been observed flying over
Roswell during the past many years. Also over Toronto, Toledo, Tulsa,
and Texarkana. In every single case, somebody didn't know what they
were. Isn't that a mysterious "coincidence" ? Oooweeooo ...
Well I'm not buying it. Put that together with all the blood moons lately, and
it becomes obvious that the end times are near. Somebody somewhere knows
more than they're letting on, and all of them are hiding the truth from us.
Answer:(a)0,(b)1.061 kg-m/s
Explanation:
Given
mass of ball is 0.10 kg
Initial speed is 15 m/s
Maximum height reached by ball is h
final velocity =0
thus momentum of ball at maximum height is 0 as velocity is zero
For halfway to maximum height
where 
v=10.61 m/s
Thus its momentum is
Answer:position relative to the starting point
Explanation:
Answer:
Mollusks
Explanation:
The shear concentration of fossilized mollusks can be explained by the ability of their shells which are comprised primarily of calcium, allowing the hard shells remain and become fossilized long after the animal has decomposed.
